21.6V 5.0Ah Replacement Battery for Dyson V7 Compatible with SV11 V7 Motorhead V7 Animal V7 Trigger V7 HEPA V7 Car+Boat V7 Absolute Handheld Vacuum Cleaners

**UPDATE**: Seller reached out and sent me a replacement battery at no charge. So far so good! Appreciate the stellar customer service. Hopefully optimistic that this battery will last longer than a few months.I had high hopes for this 21.6V 6.0Ah replacement battery, but unfortunately, it’s been a huge letdown. At first, it worked well—providing a solid charge and powering my device without issues. However, after just five months of occasional use, the battery barely holds a charge anymore.Now, instead of lasting for hours, I’m lucky if I get even two minutes before it completely drains. I’ve tried proper charging techniques, and I always store it correctly, but nothing seems to help. For the price, I expected much better durability and longevity.A battery should last longer than just a few months—this feels like a waste of money. If reliability is what you’re looking for, I’d recommend considering other options.

Purchased product in nov 2024 and worked fine until May 2024Customer service took initiative to contact me and offered a replacement at no cost. Receiving a replacement and very fast and proactive to resolve

I should have realized from the start that the 6 Ah (amp hour) rating on the advertisement was not a reasonable claim. When the battery arrived it is clearly marked as 5 Ah. Testing proved that claim to be wildly inaccurate. I ran 5 constant current discharge tests, with an overnight charge in between. I ran tests of .5A, .5A, 1A and 1.4A constant current loads and an 8 Ohm load. The results were very consistent, 0.71 Ah, 0.71 Ah, 0.71 Ah 0.73 Ah, and 0.65 Ah. Overall almost a factor of 10 lower than the advertised capacity. Since it took me so long to get around to running the tests that I could not return the battery. So I opened it up to check the individual cell. After charge and discharge cycles and a fresh recharge the 6 cells varied by 0.5 volts, after a discharge they varied by .9 V. Not a good sign for a nominal 3.6V battery. Clearly these are not quality cells. Given that the Dyson battery is listed as 2.1 Ah, which I would believe is accurate given their reputation. This battery is only 1/3 the capacity of a factory battery. Sice the price is about 1/3 the price of a replacement OEM battery, you get what you pay for. I gave the battery a 1 star rating only because I can't give it a lower score. The 6 Ah claim is complete fantasy. Caveat emptor.

Good fit

Update on my last review regarding the life of the battery. I reached out to the seller and will be receiving a replacement battery at no charge. I am very impressed at the quick response and great customer service I was provided.Thank you

This is a low cost solution for a replacement that works. Great customer service from the vendor. I like that this kit comes with the filters too!

It work perfectly

The replacement battery is working great so far.